| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium manganese-based positive electrode material which is a positive electrode material capable of being used in place of a LiCoO-based positive electrode material, and exhibiting excellent charge and discharge characteristics, and which can be manufactured by an easy manufacturing method by using elements being inexpensive and little restricted in terms of natural resources.SOLUTION: A novel lithium manganese complex oxide can be obtained which consists of only a crystal phase of a cubic rock-salt type structure by mixing and crushing a raw material by a mechanical milling method, the raw material including lithium oxide and manganese oxide, and which exhibits excellent charge and discharge characteristics. A composite more increased in a discharge capacity can be obtained by filling a mixture of the complex oxide and a carbon material in a conductive vessel, and by sintering the mixture under a non-oxidizing atmosphere, while being pressurized, and by energizing a DC pulse current. |
